Tile machinery co



Re, 16,501 w. H. MILLSPAUGH v I PAPER MACHINE DRIER Original Filed v, 1922 2 Sheets-Sheet 1 lllllllllllllllllllt llllllllllIHlll nuum F H H H 1 H Dec.

W. H. MILLSPAUGH PAPER MACHINE DRIER Original Filed '7. 1922 2 Sheets-Sheet 2 Rei sau d Dec. 7, 1926.

This invention relates to. drying equipment for paper machines of the ty e comprising a succession of rotatin heate drums or cylinders in contact with w ich. the paper sheet is carried.

Accordin to conventional practice, these drying cylinders have been driven by a train equipped'with a gear driven from a gear on another cylinder.

The present invention is intended to dispense with this elaborate and expensive gear drive.

are journalled onanti-friction roller bearbe rotated easily under application of comparatively light power, and the cylinders are driven by endless means entrained on or contacting with the cylinders; for example the felts which carry the sheet of paper in contact with the drying cylinders ma be utilized as belts for driving the cylin ers. .It is therefore only necessary to provide a .power applying means for driving the felts or other endless means contacting with the cylinders; whichpower-applying means may be conveniently applied to the first,l'ast or any desired cylinder engaged by such felt or endless means In the annexed drawings: a Fig. 1 is a diagrammatic side view of one illustrative form of drying apparatus embodying the present invention;

Fig. 2 is a plan view of the receiving end of said drying apparatus, illustrating one means of applyin power to drive the 'felts which in turn drive the drying cylinders; Fig. 3 is a plan view of the elivery end ingan alternative method of applying power, in this instance to the last cylinder of the series; v I

Fig. 4 is a side view of the deliveryend of similar equipment, illustrating another means of power application;'

1 Fig. 5 is a sectional view of a'cylinder journal bearing;

Fig. 6 is a friction bearings for a journal supporting roller; and a Fig. -7 is a detail view showing a shaft support for the journal supportin roller.

tional type,compr1smg in this instance two of intermeshing gears, each cylinder being Accordingly, the drying cylinders ings of a type which enables the cylinders to of a similar drying apparatus, but illustratdetail section of the antichine is in. 0 e illustrative apparatus. is o a conven-' UNITED STATES PATENT. OFFICE.

WILLIAM H. HILLSPAUGH, OI SANDUSKY, OHIO, ASSIGNOR TO THE FREE AND 'IEI- TILE MACHINERY CO., 01 SANDUSKY, OHIO, A CORPORATION 01' OHIO. I

PAPER-MACHINE DRIER.

Original No. 1,5aa,1so, dated April 14, 1925, Serial no. emu filed December 7, 1922. Application in reissue filed Kay 17, 1826. serial No. 100,318.

tiers of drying cylinders 1,2, etc., those of the upper tier rotating in one direction, and

those of the lower tier rotating in the opposite direction, so that the paper sheet running through the driers ma pass alternately in contact with the-cylin ers of'the upper and. lower tiers. For instance, in the particular arrangement illustrated, the paper sheet 14, entering the driers over the guideroller 15, passes around the lower half of the first cylin er 1, then over and in contact with the upper half of the next cylinder 2, then under and around the lower half of the next cylinder 3, and so on; the dried sheet be-v ing delivered from thelast cylinder of the series over the guide-roller 16. The drying cylinders are designated-respectively b the numerals 1 to 13 inclusive. Viewing t e illustrative apparatus in Fig. 1,'the cylinders of the upper tier rotate in 'aiclockwise-direction and those of the lower tier in a counterclockwise. direction. I Endless felts 17 and 18 are shown trained in engagement witli'the "respective tiers of drying cylinders to carry the paper sheet in contact with the cylinders in the manner stated; the upperfelt 17 being trained over or in contact with the upper parts of the cylinders of the top tier or row, and the lower felt 18 being trained under or in con tact with the lower parts of the cylinders of the bottom tier or row, in a. well-known manner. Guide-rollers for holding the felts to the cylinders are indicated at 19. Each-- felt is provided with a suitable system of guiding and tensioning rollers 20, engaging the'return run of the felt, including one or more adjustable take-up or tightening rol l- In order to eliminate the usual uipmenr. of intermeshing gears for driving t e cylin y frictional engagement with an endless contacting medium, such for instance as the felts'17 and 18 when starting up the machine, or by the paper sheet held in contact with the cylinderslby the felts after the Ina-- ration.

A type of aring adapted for this pure pose is illustrated in Figs. 5 to of the ders, which gears are omitted from the illusbody of the box by stud bolts 25. A filler drawings, showing a construction designed by the present inventor for the special duty of supporting cylinder journals, and which not only possesses extreme anthfriction' The cylinder journal 22 enters a journal box 23, shown having its upper part constructed as a removable cap 24 secured to the 26 of Babbitt metal or the like may be provided in the cap to bear on the top of the journal. The journal box, which is mount-- ed on the rail 27 of the machine frame, may be slightly rounded on its bottom and may be provided with a central hole 28 at its base topivotally engage a stud on the supporting rail, in order that the box may be self-ad justing to align with the journal.

Within the journal box, the journal 22 bears on a pair of rollers, 29 and 30, which are mounted by means of anti-friction bearings on fixed shafts 31; the anti-friction bearings being enclosed within the rollers, as shown more clearly in Fig. 6. Said antifriction bearings, two of which are shown in Fig. 6,.comprise concentric race rings 32 and 33 of hardened steel, and interposed hardened steel balls or rollers 34. In the specific construction shown, the outer race rings of the two bearings are separated by a spacingsleeve 35; one of the annular ball bearing devices-being fitted in the end of the bore in the journal supporting roller 30 and a removable cap 36 being secured by screws in a countersunk recess at the other end of said roller 30, whereby the parts are maintained correctly inndesired relationship.

The shafts 31 may be supported in any suitable way in the journal box walls, for instance by resting in the semicircular sockets 37 (Fig. 7) of the ledges or thickened wall portions 38 of'the journal box. Screw plugs 39 are shown filling aligned openings in the opposite journal box walls, said screw plugsalso serving in this instance to bear tightly against the ends of the shafts 31 and thus to secure said shafts'against rotation; though of course it will be understood that other means for thisfunction may be em ployed. The shaft 31 may be longitudinally and transversely grooved for supplying oil inder thus supported may be turned with expenditure of very litt e power. Aside from this anti-frict on property in the bearing, the bearing is particularly adapted for the purpose in View, because it is one which will not tend to bind-the journals under expansion caused by heat changes,it being un-- derstood that'the journals of drying cylinders are subject to such temperature changes by the introduction of the steam or other heating medium through the hollow journals into the cylinders. With the illustrativebearing, expansion ofthe journal will merely raise its center, without affecting the anti-friction capacity of the bearing; and furthermore the construction is such that the annular ball bearing devices are re mrived from contact with the heated journas.

It will furthermore be observed that by mountingthe journal-supporting rollers on stationary shafts, with the ball bearing devices enclosed within therollers, as shown for example in the illustrative construction,

such short shafts may be employed as to reduce shaft flexing under the load to a mini-v mum; and such flexing as may occur-will be substantially immaterial, since it has no other effect than the mere bending of a stationary shaft and consequently no tendency to set up crystallization as would accom- It-is accordingly only necessary to apply power to run the felts, which in this instance serve the function of driving belts. For this purpose the journals of the first two drying cylinders '1 and 2 areshown provided with intermeshing gears 40 and 41, the gear'40 on the journal of cylinder 1 being driven by a pinion or gear 42 013- a shaft 43, as clearly appears from Fig. 2. It will .beunderstood, however, that the power may be applied to the last cylinder of the series or to any cylinder in engagement with the felt to bedriven'. It will also be understood that drying'equipment may be supplied com prising only one tier of drying cylinders or two, three or more tiers,

lication means should accordingly be modified .to suit the circumstances; for instance if there were three or more tiers of cylinders,

the cylinders of such tiers adjacent the cyl-' inder 2 of the illustrative machine would notwithstanding and the power apextra tiers.

' Fig. 3 shows an alternative power applying means in which the journals at one end of the cylinders 12 and 13, being in this instance the last cylinders of the group, are in the form of extended shafts and equipped with pulleys. 44 and 45 for driving these cylinders by belts.

Fig. 4 represents an arrangement in which the cylinder 12 is driven from the cylinder 13 by a crossed belt 46 engaging pulleys 47 and 48; the cylinder 13 being provided with a pulley 49 to which power is applied by the belt 50.

Among other advantages the present invention avoids a positive gear drive of the cylinders at a peripheral speed differing from the speed of the paper and felts, which of course more or less fluctuates in the transit through the machine due to changes in- This will be readily moisture conditions. appreciated by those familiar with the art.

Obviously the present invention is not limited to the specific details of construction and arrangement shown and described, which may be variously modified to suit different requirements and conditions; nor is it essential that all the features of the invention be used conjointly since they may be advantageously used in "arious different combinations and subcombinations.

Having thus described my inventiomwhat I claim is:

1. In a paper drying apparatus, a rotatable drying cylinder unprovided with a driving gear and non-binding anti-friction bearings for the cylinder journals; whereby.

the cylinder may be easily rotated-with light application of power by thepassage of a contacting medium.

2. An apparatus of the class described comprising, in combination, a plurality of drying cylinders in contact with which a sheet of paper is successively passed; said cylinders being unprovided with driving gears anti-friction journal bearings for said cylinders; the construction and arrangement being such as to permit said cylinders to be rotated by endless means in frictional contact with the cylinders. I

A machine of the class described. com

rising incombination, a plurality of drymg cylinders; anti-friction cylinder journal bearings; endless means frictionally engaging a plurality of said cylinders; a cylinder engaged by said means being provided with power applying means, the remainingcylinders engaged by said endless means being driven by the said endless means.

4. An apparatus of the class described, comprising ant-i-frictionally supported and freely rotatable drying cylinders and endless driving means for a plurality'of such cylindcrs, operating by friction, there being no other power applying means associated with such plurality of cylinders.

5. In a paper'drying apparatus, a rotatable dryingcylinder unprovided with a driving gear; non-binding cylinder bearings comprising comparatively large journal supporting rollers; and anti-friction hearings on which said rollers are mounted; whereby the cylinder may be easily rotated with light application of power by the passage of a contacting medium. 1

6. In a paper drying apparatus, a gearless anti-frictionally journalled drying cylinder driven by the passage of a medium in contact with the cylinder surface.

7. In a paper drying apparatus, an antifrictionally journalled drying cylinder; means trained about the cylinder for carryingthe paper sheet in contact therewith: said cylinder being free of connection with driving mechanism other than through said means.

.-8. An apparatus of the class described comprising, in combination, a power-driven drying cylinder and a plurality of ungeared anti-frictionally journalled cylinders driven certain of said cylinders. from which the remaining cylinders are indirectly driven in the running of the sheet through the apparatus.

11. An apparatus of the class described comprising, in combination. a pluraltiy of drying cylinders; endless driving means frictionally engaging said cylinders; and means for driving said endless means.

12. An apparatus of the class described comprising, in combination, a plurality of drying cylinders: endless means frictionally engaging said cylinders; driving means connected with one of said cylinders; and other said cylinders being driven therefrom through said endless means.

13. An apparatus of the class described comprising, in combination, a plurality of anti-frictionally journalled drying cylinders; sheet-carrying means driving said cylinders; and means for driving said sheetcarrying means. Y

14. An apparatus of the class described comprising, in combination, anti-frictionally 'journalled drying cylinders; sheet-carrying means cooperating tlierewitlnnieans con- 1 nected with and driving certain of said cylinders; said sheet-carrying means being driven thereby and serving as driving means for a plurality of said cylinders; said plurality of cylinders being free-of driving or other connections except through said sheetcarrying means.

comprising, in combination, a plurality of anti-frictionally journalled drying cylinders; an endless felt for. carrying a sheet of paper successively in contact therewith; one

of said plurality of cylinders-provided with power-a plying means for drivin'gsaid cylinder; t e other cylinders of said plurality being driven by said felt.

16. An apparatus of the class described comprising, in combination, drying cylinders arranged in tiers; each tier including a power-connected driving cylinder and a plurality of ungeared anti-frictionally jourders driven from said driving cylinder without connections therewith other than through the means employed for passing the I sheet in contact with the cylinders.

18. An apparatus of the class described comprising, in combination, power-applying means; and a lurality of anti-frictionally journalled drying cylinders driven from said power-applying means through the passage of a medium traveling in contact with said cylinders.

19. An apparatus of the class described comprising, in combination, a plurality of anti fi'ictionally' journalled drying cylinders; endless means 0 rating by friction for driving said cyhn ers; and means for operating sa d endless means.

20. The combination 'with drying cylin ders of means for driving certain only of the same, and; a traveling belt associated with ing. 15. An apparatus of the class described sheetcarrying means, the drive bein carrying means.

said cylinders and driving those not connected with said driving mechanism,

21. The combination with the drying cyl-' inders of .drive shafting provided with gearing fordriving certain only of said cylinders and a traveling belt traveling over and around said drying cylindersand driving those not connected with said power shaft- 22. The. combination of drying cylinders and a traveling felt driving said cylinders. 23.In combination, a plurality of drier rolls, felt rolls positioned intermediate said drier rolls, an endless felt passing partly around each of said drier rolls and engaging said felt rolls, and means for driving said felt to thereby rotate the drier rolls.

24. A paper machine drier comprising drier rolls an associated drier felt, and driv-' ingmeans communicating the drive to drier rolls through said drier felt.

25. A paper machine drier having, in combination, a drier felt; felt driving means including at least one driving roll engaged by 'said felt; and a plurality of gearless drier rolls engaged by said drier felt and to which the'drive iscommunicated by said drier felt. 26. A paper machine drier having, in

combination, gearless drier rolls in tiers;

drier felts associated. with the respective tiers; interconnected means for driving the respective drier felts; the drive being communicated to said drier rolls by said drier felts,

27. A paper'machine drier having, in combination, a plurality of drier rolls'; cooperating means for carrying the sheet'of paper in contact therewith; said plurality of drier rolls being free of connection with driving mechanism other than through said sheet carrying means; and means for driving said communicated to said drier rolls by sai sheet 28. A pa 1' machine drier having in combination, riving means including a roll, endless means frictionally engaged by said roll, and a pluralityof drier rolls driven by said endless means, said endless means operating 'frictionally to communicate the drive from said driving means to said drier rolls. In testimony whereof, I have signed my name to this specification. Y

\VILLIAM H. MILLSPAUGH. 

